Assign specific single static IPV4 to the highest priority interface that is connected and remove that IP from other interfaces if present.

So if there is no Eth enable radios and look for SSID. If found connect highest priority Wi-Fi interface to the SSID.

Once connected assign the IP to that one interface.

If Eth is then connected disable radios and assign IP to the Eth.

If Wi-Fi2 is connected and has the IP and Wi-Fi 1 interface is then connected disconnect Wi-Fi2, connect Wi-Fi1 and move the IP to Wi-Fi1.

As long as a connection is possible on any of the three interfaces it should be established on the highest priority and remain stable. If the active connection is lost, due to lost signal, cable disconnection, entering flight safe mode etc attempt connection on next lower priority interface with minimal delay.

Must run on Win7, 8, 10 32 and 64 bit

Solution need not be Powershell but WLANManager example could be a starting point.

Hi there, this sounds like an interesting project!
It should be possible to handle this natively in Windows using PowerShell - so long as any client machines using this have PSv3 and above installed. I hadn't seen WMais